How Reverse Osmosis Works

Discover how multiple filtration stages and an advanced reverse osmosis membrane transform household tap water into fresh, purified drinking water.

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Purification at a Molecular Level

Reverse osmosis—often shortened to RO is a water purification process that uses pressure to move water through a semi-permeable membrane.

The membrane allows water molecules to pass through while rejecting many dissolved substances that can remain after basic filtration.

This creates two separate water streams: purified water for drinking and a concentrate stream carrying rejected substances to the household drain.

Unlike a standard sediment or carbon filter, reverse osmosis is designed to reduce total dissolved solids as well as substances that may affect the taste, odour and composition of drinking water.

The purification process

From Mains Water to Purified Drinking Water

01.

Sediment Filtration

The first filter captures particles such as sand, silt and rust, helping protect the stages that follow.

02.

Carbon Filtration

Activated carbon helps reduce chlorine and substances that can affect the taste and odour of the water.

03.

Fine Pre-Filtration

A finer filtration stage provides further protection before the water reaches the reverse osmosis membrane.

04.

Reverse Osmosis

Water is pushed through the semi-permeable RO membrane. Many dissolved substances are rejected and directed away from the purified-water supply.

05.

Final Conditioning

Depending on the Cebilon model, the purified water passes through additional conditioning stages before reaching the drinking-water tap.

The exact filtration stages and water-delivery method vary between Cebilon models.

Why multiple stages matter

More Than a Single Filter

Each filtration stage performs a different role, helping the system deliver reliable purification while protecting the reverse osmosis membrane.

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